I've heard a lot lot of different answers. Could be no one out side the factory knows. They may of ended production on that style frame years before they all sold out. I was told 2008 was the last year for this style, yet I just bought one that was said to be 2 years old. So that would put the guy buying it 2013. Was it just old stock? Who knows. When you want parts for it they go by old style frame or new style so you won't really "need" to know.